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JPH0141269Y2 - - Google Patents

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Publication number
JPH0141269Y2
JPH0141269Y2 JP2101684U JP2101684U JPH0141269Y2 JP H0141269 Y2 JPH0141269 Y2 JP H0141269Y2 JP 2101684 U JP2101684 U JP 2101684U JP 2101684 U JP2101684 U JP 2101684U JP H0141269 Y2 JPH0141269 Y2 JP H0141269Y2
Authority
JP
Japan
Prior art keywords
speaker
channel
seat
driver
audio device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP2101684U
Other languages
Japanese (ja)
Other versions
JPS60134393U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2101684U priority Critical patent/JPS60134393U/en
Publication of JPS60134393U publication Critical patent/JPS60134393U/en
Application granted granted Critical
Publication of JPH0141269Y2 publication Critical patent/JPH0141269Y2/ja
Granted legal-status Critical Current

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  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Stereophonic Arrangements (AREA)

Description

【考案の詳細な説明】 〈産業上の利用分野〉 本考案は車載用オーデイオ装置に係り、特に助
手席及び運転席の両位置において左右両チヤンネ
ルの音圧レベルをほぼ等しくできる車載用オーデ
イオ装置に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an in-vehicle audio device, and more particularly, to an in-vehicle audio device that can substantially equalize the sound pressure level of both left and right channels in both the passenger seat and driver seat positions. .

〈従来技術〉 車載用オーデイオ装置は第１図に示すように車
室１１内の左右、たとえば座席後方リアトレイ１
２の左右にＬチヤンネル用のスピーカ１３ＬとＲ
チヤンネル用のスピーカ１３Ｒを配置し、運転席
１４及び助手席１５における塔乗者がステレオ受
聴を楽しめるようになつている。<Prior art> As shown in FIG.
Speakers 13L and R for the L channel on the left and right of 2
Channel speakers 13R are arranged so that passengers in the driver's seat 14 and passenger seat 15 can enjoy stereo listening.

〈従来技術の欠点〉 しかし、かゝる従来の車載用オーデイオ装置で
は、運転席１４においてＲチヤンネルのスピーカ
１３Ｒより聞えるＲチヤンネル音圧レベルとＬチ
ヤンネルのスピーカ１３Ｌより聞えるＬチヤンネ
ルの音圧レベルとの間に主として距離差に基づく
レベル差が生じ、角度βによるスピーカの指向性
ではかゝるレベル差を補正しきれなかつた。この
ため、運転者にはＲチヤンネルのスピーカ１３Ｒ
からの音声が主として聞こえ、不自然であり、ス
テレオ効果が損われていた。<Disadvantages of the prior art> However, in such a conventional in-vehicle audio system, the R channel sound pressure level heard from the R channel speaker 13R in the driver's seat 14 and the L channel sound pressure level heard from the L channel speaker 13L are different. A level difference mainly arises due to a distance difference between the two, and the directivity of the speaker depending on the angle β cannot fully correct such a level difference. Therefore, the driver must listen to the R channel speaker 13R.
The audio was mainly heard, was unnatural, and the stereo effect was impaired.

一方、助手席１５の塔乗者には同様の理由でＬ
チヤンネルのスピーカ１３Ｌからの音声が主とし
て聞こえ、やはりステレオ効果が損われていた。 On the other hand, for the same reason, the passenger in passenger seat 15
The audio from the channel speaker 13L was mainly heard, and the stereo effect was also impaired.

尚、運転操作パネル１６にバランス調整用のボ
リユーム１７が設けられており、該ボリユーム１
７を調整することにより運転者又は助手席の塔乗
者のうち一方の者のみがステレオ受聴を楽しめる
ようになつているが、他方の者は全くステレオ受
聴を楽しめないばかりか、バランス調整操作が煩
しい欠点がある。 Note that the operation panel 16 is provided with a volume 17 for balance adjustment, and the volume 1
By adjusting 7, only one of the driver or the passenger in the passenger seat can enjoy stereo listening, but the other person not only cannot enjoy stereo listening at all, but also has difficulty adjusting the balance. There are some annoying drawbacks.

〈考案の効果〉 本考案の目的は、運転席及び助手席において同
時にステレオ受聴が可能な車載用オーデイオ装置
を提供することである。<Effects of the Invention> An object of the invention is to provide an in-vehicle audio device that allows simultaneous stereo listening in the driver's seat and passenger seat.

本考案の別の目的はバランス調整操作をしなく
ても、運転席及び助手席において同時にステレオ
受聴が可能な車載用オーデイオ装置を提供するこ
とである。 Another object of the present invention is to provide an in-vehicle audio system that allows stereo listening at the same time in the driver's seat and the passenger's seat without performing a balance adjustment operation.

〈考案の概要〉 本考案はＲチヤンネル用のスピーカとＬチヤン
ネル用のスピーカをそれぞれ第１、第２の２つの
スピーカで構成し、Ｌチヤンネルの第１スピーカ
を助手席に向けて配置すると共に、Ｌチヤンネル
の第２スピーカを運転席に向けて配置し、且つＲ
チヤンネルの第１スピーカを運転席に向けて配置
すると共に、Ｒチヤンネルの第２スピーカを助手
席に向けて配置し、システムの一方のチヤンネル
の第１スピーカへの入力電圧を他方のチヤンネル
の第２スピーカへの入力電圧より小にする入力電
圧調整回路をＬチヤンネルとＲチヤンネルにそれ
ぞれ設けてなる車載用オーデイオ装置である。こ
の考案によれば、運転席と助手席において同時に
ステレオ受聴を楽しむことができ、しかもバラン
ス調整などの操作が不要である。<Summary of the invention> This invention consists of two speakers, a first and a second, for the R channel and the L channel, respectively, and the first speaker for the L channel is placed facing the passenger seat. Place the second speaker of the L channel toward the driver's seat, and
The first speaker of the channel is placed facing the driver's seat, the second speaker of the R channel is placed facing the passenger seat, and the input voltage to the first speaker of one channel of the system is connected to the second speaker of the other channel. This is an on-vehicle audio device in which an input voltage adjustment circuit that lowers the input voltage to a speaker is provided in each of the L channel and the R channel. According to this invention, it is possible to enjoy stereo listening at the same time in the driver's seat and passenger seat, and there is no need for operations such as balance adjustment.

〈実施例〉 第２図は本考案の車載用オーデイオ装置におけ
るスピーカの配置図であり、車室１１内の座席後
方リアトレイ１２の左側にはＬチヤンネルの第１
スピーカ１３L1とＬチヤンネルの第２スピーカ
１３L2がそれぞれ配置され、又座席後方リアト
レイ１２の右側にはＲチヤンネルの第１スピーカ
１３R1とＲチヤンネルの第２スピーカ１３R2が
それぞれ配置されている。そして、Ｌチヤンネル
の第１スピーカ１３L1は助手席１５に向けて、
配置されＬチヤンネルの第２スピーカ１３L2は
運転席１４に向けて配置され、又Ｒチヤンネルの
第１スピーカ１３R1は運転席１４に向けて配置
され、Ｒチヤンネルの第２スピーカ１３R2は助
手席１５に向けて配置されている。<Embodiment> FIG. 2 is a layout diagram of speakers in the in-vehicle audio system of the present invention.
A speaker 13L 1 and a second speaker 13L 2 of the L channel are arranged, respectively, and a first speaker 13R 1 of the R channel and a second speaker 13R 2 of the R channel are arranged on the right side of the rear tray 12 behind the seat, respectively. Then, the first speaker 13L 1 of the L channel is directed towards the passenger seat 15.
The second speaker 13L 2 of the L channel is arranged facing the driver's seat 14, the first speaker 13R 1 of the R channel is arranged facing the driver's seat 14, and the second speaker 13R 2 of the R channel is arranged facing the passenger seat 14. It is placed towards 15.

今、Ｌチヤンネルの第１スピーカ１３L1から
助手席迄の距離とＲチヤンネルの第１スピーカ１
３R1から運転席迄の距離をそれぞれL1とし、又
Ｌチヤンネルの第２スピーカ１３L2から運転席
迄の距離とＲチヤンネルの第２スピーカ１３R2
から助手席迄の距離をそれぞれL2とすれば、運
転席１４及び助手席１５におけるＲチヤンネルと
Ｌチヤンネルの音圧レベル差△Ｅは次式 △Ｅ＝20logL2／L1（dB） (1) により表現される。但し、Ｒチヤンネルの各スピ
ーカの能率とＬチヤンネルの各スピーカの能率は
等しいものとする。そして、Ｒチヤンネルの第１
スピーカ１３R1の出力レベルをWR1、Ｌチヤンネ
ルの第２スピーカ１３L2の出力レベルをWL2とす
れば、運転席１４におけるこの２つのスピーカの
音圧レベル差△E0は次式 △E0＝（WR1−WL2）＋20logL2／L1（dB） (2) により表現され、又Ｌチヤンネルの第１スピーカ
１３L1の出力レベルをWL1、Ｒチヤンネルの第２
スピーカ１３R2の出力レベルをWR2とすれば、助
手席１５における音圧レベル差△Eaは次式 △Ea＝（WL1−WR2）＋20logL2／L1（dB） (3) により表現される。 Now, the distance from the L channel 1st speaker 13L 1 to the passenger seat and the R channel 1st speaker 1
The distance from 3R 1 to the driver's seat is L 1 , and the distance from the L channel second speaker 13L 2 to the driver's seat and the R channel second speaker 13R 2
Letting L 2 be the distance from to the passenger seat, the sound pressure level difference △E between the R channel and the L channel at the driver's seat 14 and passenger seat 15 is calculated by the following formula: △E=20logL 2 /L 1 (dB) (1 ). However, it is assumed that the efficiency of each speaker in the R channel is equal to the efficiency of each speaker in the L channel. And the first of the R channel
If the output level of the speaker 13R 1 is W R1 and the output level of the second speaker 13L 2 of the L channel is W L2 , the sound pressure level difference △E 0 between these two speakers in the driver's seat 14 is calculated by the following formula △E 0 = (W R1 - W L2 ) + 20logL 2 /L 1 (dB) (2) Also, the output level of the first speaker 13L1 of the L channel is W L1 , and the output level of the second speaker 13L1 of the R channel is
If the output level of the speaker 13R2 is W R2 , the sound pressure level difference △Ea at the passenger seat 15 is expressed by the following formula: △Ea = (W L1 − W R2 ) + 20logL 2 /L 1 (dB) (3) Ru.

従つて、(2)〜(3)式より、次式 WL2−WR1＝20logL2／L1 (4) WR2−WL1＝20logL2／L1 (5) が成立するように各スピーカの出力レベルWR1，
WR2，WL1，WL2を決定すれば、運転席１４及び
助手席１５においてＲチヤンネルとＬチヤンネル
の音圧レベルが等しくなり、ステレオ効果が損わ
れないことになる。 Therefore, from equations ( 2 ) and (3), each speaker is adjusted so that the following equation W L2 −W R1 = 20logL 2 / L 1 ( 4) The output level W R1 ,
If W R2 , W L1 , and W L2 are determined, the sound pressure levels of the R channel and the L channel will be equal in the driver's seat 14 and passenger seat 15, and the stereo effect will not be impaired.

第３図は入力電圧調整回路を含むスピーカ接続
図であり、同図ＡはＲチヤンネル、同図ＢはＬチ
ヤンネルの接続図である。 FIG. 3 is a speaker connection diagram including an input voltage adjustment circuit, and FIG. 3A is a connection diagram of the R channel, and FIG. 3B is a connection diagram of the L channel.

Ｒチヤンネルの第１スピーカ１３R1と第２ス
ピーカ１３R2は互いに並列に接続され、第１ス
ピーカ１３R1に直列に抵抗Ｒが接続され、端子
T1，T2よりＲチヤンネルのオーデイオ信号が印
加されるようになつている。又、Ｌチヤンネルの
第１スピーカ１３L1と第２スピーカ１３L2は互
いに並列に接続され、第１スピーカ１３L1に直
列に抵抗Ｒが接続され、端子T1′，T2′よりＬチヤ
ンネルのオーデイオ信号が印加されるようになつ
ている。尚、抵抗Ｒが入力電圧調整回路１０１，
１０２を構成している。今、各第１スピーカ１３
R1，１３L1の抵抗値をr1、第２スピーカ１３R2，
１３L2の抵抗値をr2、抵抗Ｒの抵抗値をr3、Ｒチ
ヤンネル及びＬチヤンネルのオーデイオ信号電圧
をＶとすれば、Ｒチヤンネルの第１スピーカ１３
R1にかかる電圧VR1及びＬチヤンネルの第１スピ
ーカ１３L1にかかる電圧VL1は次式 VR1＝VL1＝r1／r1＋r3Ｖ (6) により表現され、Ｒチヤンネルの第２スピーカ１
３R2にかかる電圧VR2及びＬチヤンネルの第２ス
ピーカ１３L2にかかる電圧VL2は当然VR2＝VL2＝
Ｖである。 The first speaker 13R 1 and the second speaker 13R 2 of the R channel are connected in parallel with each other, a resistor R is connected in series with the first speaker 13R 1 , and the terminal
The R channel audio signal is applied from T 1 and T 2 . Further, the first speaker 13L 1 and the second speaker 13L 2 of the L channel are connected in parallel with each other, a resistor R is connected in series with the first speaker 13L 1 , and the audio of the L channel is connected from the terminals T 1 ′ and T 2 ′. A signal is now applied. Note that the resistor R is the input voltage adjustment circuit 101,
102. Now, each first speaker 13
R 1 , the resistance value of 13L 1 is r 1 , the second speaker 13R 2 ,
If the resistance value of 13L 2 is r 2 , the resistance value of resistor R is r 3 , and the audio signal voltages of the R channel and L channel are V, then the first speaker 13 of the R channel
The voltage V R1 applied to R 1 and the voltage V L1 applied to the first speaker 13L 1 of the L channel are expressed by the following formula V R1 = V L1 = r 1 / r 1 + r 3 V (6). Speaker 1
The voltage V R2 applied to 3R 2 and the voltage V L2 applied to the second speaker 13L 2 of the L channel are naturally V R2 = V L2 =
It is V.

ここで簡単のためにこの４本のスピーカに同じ
スピーカを使用したとすると、r1＝r2＝ｒとおけ
て、 WL2−WR1＝WR2−WL1＝20logV2／ｒ −20log（rV／ｒ＋r3）2／ｒ＝20logｒ＋r3／ｒ(
7) となる。 For simplicity, if we use the same speakers for these four speakers, we can set r 1 = r 2 = r, and then W L2 −W R1 = W R2 −W L1 =20logV 2 /r −20log( rV/r+ r3 ) 2 /r=20logr+ r3 /r(
7) becomes.

従つて、(7)式により(4)，(5)式を補正すれば 20logL2／L1＝20logｒ＋r3／ｒ (8) が成立する。換言すれば、(8)式が満たされるよう
に入力電圧調整回路１０１，１０２の抵抗Ｒの抵
抗値r3を決定し、一方のチヤンネルの第１スピー
カの出力レベルを他方のチヤンネルの第２スピー
カのそれより小にすれば運転席１４及び助手席１
５におけるＲチヤンネルとＬチヤンネルの音圧レ
ベル差は零になる。 Therefore, by correcting equations (4) and (5) using equation (7), 20logL 2 /L 1 =20logr+r 3 /r (8) holds true. In other words, the resistance value r 3 of the resistor R of the input voltage adjustment circuits 101 and 102 is determined so that equation (8) is satisfied, and the output level of the first speaker of one channel is adjusted to the second speaker of the other channel. If it is smaller than that of the driver's seat 14 and passenger seat 1
The sound pressure level difference between the R channel and the L channel at 5 becomes zero.

尚、以上の説明では抵抗Ｒを第１スピーカ１３
R1，１３L1にそれぞれ直列に接続して入力電圧
調整回路１０１，１０２を構成したが、本考案は
かかる実施例に限定されるものではなく、請求の
範囲内で種々変更できるものである。 In addition, in the above explanation, the resistance R is the first speaker 13.
Although the input voltage adjustment circuits 101 and 102 are constructed by connecting R 1 and 13L 1 in series, the present invention is not limited to this embodiment, and can be modified in various ways within the scope of the claims.

〈考案の効果〉 以上説明したように、Ｒチヤンネル用のスピー
カとＬチヤンネル用のスピーカをそれぞれ第１、
第２の２つのスピーカで構成し、Ｌチヤンネルの
第１スピーカを助手席に向けて配置すると共に、
Ｌチヤンネルの第２スピーカを運転席に向けて配
置し、且つＲチヤンネルの第１スピーカを運転席
に向けて配置すると共に、Ｒチヤンネルの第２ス
ピーカを助手席に向けて配置し、更に一方のチヤ
ンネルの第１スピーカの出力レベルを他方のチヤ
ンネルの第２スピーカの出力レベルより小にする
入力電圧調整回路をＬチヤンネルとＲチヤンネル
にそれぞれ設け、該音声出力レベル調整回路によ
り運転席及び助手席における各チヤンネルの音圧
レベル差を零にするように構成したから、運転席
及び助手席においてステレオ効果が損われること
がなく、良好なステレオ受聴を楽しめ、しかも従
来のようにバランス調整操作が不要となつた。<Effect of the invention> As explained above, the R channel speaker and the L channel speaker are connected to the first and second speakers, respectively.
Consisting of two second speakers, with the first speaker of the L channel facing the passenger seat,
The second speaker of the L channel is arranged to face the driver's seat, the first speaker of the R channel is arranged to face the driver's seat, the second speaker of the R channel is arranged to face the passenger seat, and one of the speakers is arranged to face the passenger seat. An input voltage adjustment circuit that makes the output level of the first speaker of one channel lower than the output level of the second speaker of the other channel is provided in each of the L channel and the R channel, and the audio output level adjustment circuit allows the driver's seat and the passenger's seat to Since the structure is configured to reduce the sound pressure level difference between each channel to zero, the stereo effect is not impaired in the driver's and passenger's seats, allowing you to enjoy good stereo listening, and there is no need to perform balance adjustment operations like in the past. Summer.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の車載用オーデイオ装置における
スピーカ配置図、第２図は本考案にかかる車載用
オーデイオ装置におけるスピーカ配置図、第３図
は本考案にかゝる入力電圧調整回路を含むスピー
カ接続図である。 １１……車室、１２……座席後方リアトレイ、
１３R1……Ｒチヤンネルの第１スピーカ、１３
R2……Ｒチヤンネルの第２スピーカ、１３L1…
…Ｌチヤンネルの第１スピーカ、１３L2……Ｌ
チヤンネルの第２スピーカ、１４……運転席、１
５……助手席、１０１，１０２……入力電圧調整
回路。 Fig. 1 is a speaker arrangement diagram in a conventional in-vehicle audio device, Fig. 2 is a speaker arrangement diagram in an in-vehicle audio device according to the present invention, and Fig. 3 is a speaker connection including an input voltage adjustment circuit according to the present invention. It is a diagram. 11... Vehicle interior, 12... Rear tray behind the seat,
13R 1 ...R channel 1st speaker, 13
R 2 ...R channel second speaker, 13L 1 ...
...L channel 1st speaker, 13L 2 ...L
Channel 2nd speaker, 14...Driver's seat, 1
5... Passenger seat, 101, 102... Input voltage adjustment circuit.

Claims (1)

【実用新案登録請求の範囲】 (1) 車室内の左右にＲチヤンネル用のスピーカ
と、Ｌチヤンネル用のスピーカを配設してなる
車載用オーデイオ装置において、Ｒチヤンネル
用のスピーカとＬチヤンネル用のスピーカをそ
れぞれ第１、第２の２つのスピーカで構成し、
Ｌチヤンネルの第１スピーカを助手席に向けて
配置すると共に、Ｌチヤンネルの第２スピーカ
を運転席に向けて配置し、且つＲチヤンネルの
第１スピーカを運転席に向けて配置すると共
に、Ｒチヤンネルの第２スピーカを助手席に向
けて配置し、更に一方のチヤンネルの第１スピ
ーカの出力レベルを他方のチヤンネルの第２ス
ピーカの出力レベルより小にする入力電圧調整
回路をＬチヤンネルとＲチヤンネルにそれぞれ
設けてなることを特徴とする車載用オーデイオ
装置。 (2) 前記入力電圧調整回路を各チヤンネルの第１
スピーカに直列に抵抗を接続して構成すること
を特徴とする実用新案登録請求の範囲第(1)項記
載の車載用オーデイオ装置。 (3) 前記各チヤンネルのスピーカを座席後方リア
トレイの左右に配置することを特徴とする実用
新案登録請求の範囲第(1)項又は第(2)項記載の車
載用オーデイオ装置。[Scope of Claim for Utility Model Registration] (1) In an in-vehicle audio device in which an R channel speaker and an L channel speaker are arranged on the left and right sides of a vehicle interior, Each speaker is configured with two speakers, a first speaker and a second speaker,
The first speaker of the L channel is arranged to face the passenger seat, the second speaker of the L channel is arranged to face the driver's seat, the first speaker of the R channel is arranged to face the driver's seat, and the first speaker of the R channel is arranged to face the driver's seat. A second speaker is placed facing the passenger seat, and input voltage adjustment circuits are installed in the L channel and R channel to make the output level of the first speaker of one channel lower than the output level of the second speaker of the other channel. An in-vehicle audio device characterized by being provided with each. (2) Connect the input voltage adjustment circuit to the first
2. An in-vehicle audio device according to claim (1) of claim 1, characterized in that the audio device is configured by connecting a resistor in series with a speaker. (3) The in-vehicle audio device according to claim 1 or 2, wherein the speakers of each channel are arranged on the left and right sides of a rear tray behind the seat.
JP2101684U 1984-02-16 1984-02-16 Automotive audio equipment Granted JPS60134393U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2101684U JPS60134393U (en) 1984-02-16 1984-02-16 Automotive audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2101684U JPS60134393U (en) 1984-02-16 1984-02-16 Automotive audio equipment

Publications (2)

Publication Number Publication Date
JPS60134393U JPS60134393U (en) 1985-09-06
JPH0141269Y2 true JPH0141269Y2 (en) 1989-12-06

Family

ID=30512035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2101684U Granted JPS60134393U (en) 1984-02-16 1984-02-16 Automotive audio equipment

Country Status (1)

Country Link
JP (1) JPS60134393U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080025518A1 (en) * 2005-01-24 2008-01-31 Ko Mizuno Sound Image Localization Control Apparatus
EP3732898B1 (en) * 2017-12-29 2024-06-12 Harman International Industries, Incorporated Asymmetric acoustical implementation for improving a listening experience for a driver in a vehicle

Also Published As

Publication number Publication date
JPS60134393U (en) 1985-09-06

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